RT Journal Article
T1 Extended-range temporal electronic speckle pattern interferometry
A1 Quiroga Mellado, Juan Antonio
A1 Servín Guirado, Manuel
A1 Dávila Álvarez, Abundio
AB In recent years the availability of high-speed digital video cameras has motivated the study of electronic speckle pattern interferometry (ESPI) in the time domain. To this end a properly sampled temporal sequence off-fringe patterns is used to analyze the temporal experiment. Samples of temporal speckle images must fulfill the Nyquist criteria over the time axis. When the transient phenomena understudy are too fast, the required sampling frequency over time may not be fulfilled. In that case one needs to extend the measuring range of the algorithm used to extract the modulating phase. We analyze how to use short laser pulses or short video acquisition times with fairly long temporal separation among them to estimate the modulating phase of a dynamic ESPI experiment. The only requirement is that the modulating phase being estimated be properly sampled in the spatial domain.
PB The Optical Society Of America
SN 1559-128X
YR 2002
FD 2002-08-01
LK https://hdl.handle.net/20.500.14352/58777
UL https://hdl.handle.net/20.500.14352/58777
LA eng
NO © 2002 Optical Society of America.We acknowledge the valuable support of the Mexican Council of Science and Technology (CONACYT) as well as the support of the European Union Project INDUCE.BRPR-CT97-0805.
NO Mexican Council of Science and Technology (CONACYT)
NO European Union
DS Docta Complutense
RD 29 jun 2025